linux-stable.git/drivers/gpu/drm/imx, branch v6.4.7

drm/imx/lcdc: fix a NULL vs IS_ERR() bug in probe

2023-07-19T14:35:38+00:00

[ Upstream commit dae2f7b89a8436351a2982d0d96a8a56accca576 ]

The devm_drm_dev_alloc() function returns error pointers.  It never
returns NULL.  Fix the check.

Fixes: c87e859cdeb5 ("drm/imx/lcdc: Implement DRM driver for imx25")
Signed-off-by: Dan Carpenter 
Reviewed-by: Uwe Kleine-König 
Signed-off-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/d0a1fc55-3ef6-444e-b3ef-fdc937d8d57a@kili.mountain
Signed-off-by: Sasha Levin

Merge tag 'drm-misc-next-2023-03-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2023-03-21T18:42:36+00:00

drm-misc-next for v6.4-rc1:

Cross-subsystem Changes:
- Add drm_bridge.h to drm_bridge maintainers.

Core Changes:
- Assorted fixes to TTM, tests, format-helper, accel.
- Assorted Makefile fixes to drivers and accel.
- Implement fbdev emulation for GEM DMA drivers, and convert a lot of
  drivers to use it.
- Use tgid instead of pid for tracking clients.

Driver Changes:
- Assorted fixes in rockchip, vmwgfx, nouveau, cirrus.
- Add imx25 driver.
- Add Elida KD50T048A, Sony TD4353, Novatek NT36523, STARRY 2081101QFH032011-53G panels.
- Add 4K mode support to rockchip.
- Convert cirrus to use regular atomic helpers, and more cirrus
  improvements.
- Add damage clipping to cirrus, virtio.

[airlied: add drm_bridge.h include to imx]
Signed-off-by: Dave Airlie 

From: Maarten Lankhorst 
Link: https://patchwork.freedesktop.org/patch/msgid/f7b765c7-d49d-edb5-2a6a-4f7a7be16a59@linux.intel.com

drm/imx: Use GEM DMA fbdev emulation

2023-03-14T16:07:48+00:00

Use the fbdev emulation that is optimized for DMA helpers. Avoids
possible shadow buffering and makes the code simpler.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20230313155138.20584-9-tzimmermann@suse.de

drm/imx/dcss: Use GEM DMA fbdev emulation

2023-03-14T16:07:48+00:00

Use the fbdev emulation that is optimized for DMA helpers. Avoids
possible shadow buffering and makes the code simpler.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20230313155138.20584-8-tzimmermann@suse.de

drm: Drop ARCH_MULTIPLATFORM from dependencies

2023-03-14T11:57:22+00:00

Some of these dependencies used to be sensible when only a small part of
the platforms supported by ARCH=arm could be compiled together in a
single kernel image. Nowadays ARCH_MULTIPLATFORM is only used as a guard
for kernel options incompatible with a multiplatform image. See commit
84fc86360623 ("ARM: make ARCH_MULTIPLATFORM user-visible") for some more
details.

Signed-off-by: Uwe Kleine-König 
Acked-by: Arnd Bergmann 
Reviewed-by: Javier Martinez Canillas 
Reviewed-by: Philipp Zabel 
Signed-off-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20221209220555.3631364-1-u.kleine-koenig@pengutronix.de

drm/imx/lcdc: Implement DRM driver for imx25

2023-03-14T10:43:53+00:00

Add support for the LCD Controller found on i.MX21 and i.MX25.

It targets to be a drop in replacement for the imx-fb driver.

[ukl: Rebase to a newer kernel version, various smaller fixes and
improvements]

Signed-off-by: Marian Cichy 
Reviewed-by: Philipp Zabel 
Signed-off-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/20230306115249.2223042-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Philipp Zabel 
Link: https://patchwork.freedesktop.org/patch/msgid/20230306115249.2223042-3-u.kleine-koenig@pengutronix.de

drm/imx/dcss: Don't call dev_set_drvdata(..., NULL);

2023-01-10T14:26:06+00:00

The driver core takes care about removing driver data, so this can be
dropped from the driver.

Signed-off-by: Uwe Kleine-König 
Reviewed-by: Laurentiu Palcu 
Signed-off-by: Laurentiu Palcu 
Link: https://patchwork.freedesktop.org/patch/msgid/20221230130025.240776-2-u.kleine-koenig@pengutronix.de

drm/imx/dcss: Drop if blocks with always false condition

2023-01-10T14:26:06+00:00

dcss_drv_platform_remove() is only called for a device after
dcss_drv_platform_probe() returned 0. In that case dev_set_drvdata() was
called with a non-NULL value and so dev_get_drvdata() won't return NULL.

Signed-off-by: Uwe Kleine-König 
Reviewed-by: Laurentiu Palcu 
Signed-off-by: Laurentiu Palcu 
Link: https://patchwork.freedesktop.org/patch/msgid/20221230130025.240776-1-u.kleine-koenig@pengutronix.de

drm/imx/dcss: stop using drm_bridge_connector_en/disable_hpd()

2023-01-05T14:07:01+00:00

The functionality of drm_bridge_connector_enable_hpd() and
drm_bridge_connector_disable_hpd() is provided automatically by the
drm_kms_poll helpers. Stop calling these functions manually.

Signed-off-by: Dmitry Baryshkov 
Reviewed-by: Tomi Valkeinen 
[narmstrong: removed now unused kms var in dcss_dev_suspend|resume()]
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20221102180705.459294-5-dmitry.baryshkov@linaro.org

drm/imx: move IPUv3 driver into separate subdirectory

2022-12-16T17:40:29+00:00

The IPUv3 and DCSS driver are two totally separate DRM drivers. Having
one of them live in the drivers/gpu/drm/imx toplevel directory and the
other one in the dcss/ subdirectory is confusing. Move the IPUv3 driver
into its own subdirectory to make the separation more clear.

Signed-off-by: Lucas Stach 
Reviewed-by: Philipp Zabel 
Link: https://lore.kernel.org/r/20221125112519.3849636-1-l.stach@pengutronix.de
Signed-off-by: Philipp Zabel 
Link: https://patchwork.freedesktop.org/patch/msgid/20221125112519.3849636-1-l.stach@pengutronix.de